CN1007030B - 装有自动频率控制环路的接收机 - Google Patents

装有自动频率控制环路的接收机

Info

Publication number
CN1007030B
CN1007030B CN86108014.9A CN86108014A CN1007030B CN 1007030 B CN1007030 B CN 1007030B CN 86108014 A CN86108014 A CN 86108014A CN 1007030 B CN1007030 B CN 1007030B
Authority
CN
China
Prior art keywords
voltage
frequency
convertor
signal
receiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CN86108014.9A
Other languages
English (en)
Chinese (zh)
Other versions
CN86108014A (zh
Inventor
安东尼厄斯·约翰尼斯·约瑟夫斯·科尼利尼斯·隆默斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of CN86108014A publication Critical patent/CN86108014A/zh
Publication of CN1007030B publication Critical patent/CN1007030B/zh
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
    • H03J7/10—Modification of automatic frequency control sensitivity or linearising automatic frequency control operation

Landscapes

  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
CN86108014.9A 1985-11-27 1986-11-24 装有自动频率控制环路的接收机 Expired CN1007030B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8503274A NL8503274A (nl) 1985-11-27 1985-11-27 Ontvanger voorzien van een automatische frequentieregellus.
NL8503274 1985-11-27

Publications (2)

Publication Number Publication Date
CN86108014A CN86108014A (zh) 1987-08-05
CN1007030B true CN1007030B (zh) 1990-02-28

Family

ID=19846927

Family Applications (1)

Application Number Title Priority Date Filing Date
CN86108014.9A Expired CN1007030B (zh) 1985-11-27 1986-11-24 装有自动频率控制环路的接收机

Country Status (8)

Country Link
US (1) US4736458A (de)
EP (1) EP0224959B1 (de)
JP (1) JPS62131620A (de)
CN (1) CN1007030B (de)
DE (1) DE3675345D1 (de)
HK (1) HK89691A (de)
NL (1) NL8503274A (de)
SG (1) SG50891G (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303403A (en) * 1992-06-16 1994-04-12 Microelectronics Technology, Inc. Electronic switch for selecting satellite polarization signals
JP3070733B2 (ja) * 1997-12-12 2000-07-31 日本電気株式会社 自動周波数制御方法および装置
MXPA04010619A (es) * 2002-04-26 2004-12-13 Thomson Licensing Sa Filtro de entrada de sintonizador con frecuencia central electronicamente ajustable para adaptarse a la capacidad de la antena.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007043A (en) * 1954-07-09 1961-10-31 Itt Automatic frequency control system
DE1260558B (de) * 1965-08-25 1968-02-08 Saba Gmbh Schaltungsanordnung zur automatischen Scharfabstimmung in Funkgeraeten
US3764917A (en) * 1969-09-15 1973-10-09 Gte Sylvania Inc Automatic frequency control circuit
US3697885A (en) * 1970-12-04 1972-10-10 Rca Corp Automatic frequency control circuits
US3991371A (en) * 1971-04-20 1976-11-09 Aeronutronic Ford Corporation Automatic frequency control of voltage variable capacitor tuned receivers
US3784917A (en) * 1972-12-15 1974-01-08 Philco Ford Corp Constant lock-in range automatic frequency control
DE2311621A1 (de) * 1973-03-09 1974-09-12 Blaupunkt Werke Gmbh Nachstimmautomatik (afc) mit extrem eingeengtem fang- und haltebereich
US4271533A (en) * 1979-07-11 1981-06-02 Gte Products Corporation AFC Interface circuit
DE3114595A1 (de) * 1981-04-10 1982-10-28 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth "schaltungsanordnung fuer einen fm-demodulator"

Also Published As

Publication number Publication date
HK89691A (en) 1991-11-15
DE3675345D1 (de) 1990-12-06
NL8503274A (nl) 1987-06-16
CN86108014A (zh) 1987-08-05
EP0224959A1 (de) 1987-06-10
US4736458A (en) 1988-04-05
EP0224959B1 (de) 1990-10-31
SG50891G (en) 1991-08-23
JPS62131620A (ja) 1987-06-13

Similar Documents

Publication Publication Date Title
US4479091A (en) Phase locked loop FM demodulator with variable bandwidth loop filter
CA1211834A (en) Low noise catv converter
EP0618676B1 (de) Abstimmbare Vorrichtung
CN1294776A (zh) 解调器电路
US6122496A (en) Device and method for controlling frequency characteristic of a filter
CA1194592A (en) Synchronous video detector circuit using phase-locked loop
US5263187A (en) Automatic gain control circuit
US4063039A (en) Stereo noise reduction circuit
US4876739A (en) TVRO receiver system with low-cost video-noise reduction filter
CN86103137A (zh) 电子调谐式fm接收机
CN1007030B (zh) 装有自动频率控制环路的接收机
US4594556A (en) Demodulation circuit from FM signals and demodulation system therefor
US4121161A (en) AM receiver
US4251782A (en) Multiple tuned circuit correction apparatus
US6369644B1 (en) Filter circuit
US4419695A (en) Television sound receiver
US5523720A (en) FM signal demodulator phase locked loop
US4746873A (en) FM demodulators
KR0168480B1 (ko) 위성방송수신을 위한 fm 복조기
KR0177676B1 (ko) 자동이득 제어 지연점 조정회로
US3968439A (en) Radio receiver having a preselection circuit tuned by a varactor with a variable limiter threshold circuit to attenuate large amplitude signals
KR200235005Y1 (ko) Fm 검파회로의 루프필터
KR950010729B1 (ko) 위상고정루프(pll) 시스템
US3122708A (en) Gain controlled frequency modulation detector system
KR0133724Y1 (ko) 오디오 변환회로

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C13 Decision
GR02 Examined patent application
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee